Roller-mill.



Na. 709,082. Patented Sept. I6, I902. w. A. nurm.

ROLLER MILL.

(Application filed Jan. 3, 1902.) (No Model.)

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NITE @TATES ATENT OFFICE,

W'ILLIAM ABEROROll'IBlE DUNN, OF SMITIIVILLE, MINNESOTA, ASSIGNOR OF ONE-HALF TO ATIIOL MORTON MILLER, OFDULUTH, MINNESOTA.

ROLLER-MILL.

SPEGIFTCATION forming partof Letters Patent N 0. 709.082, dated September 16, 1902. Application filed January 3, 1902. Serial No; 88,303. (No model To all whom, it may con/00772 view an apparatusembodying the improve- Beitknownthat I, WILLIAM ABERCROMBIE ments in their preferred form. DUNN,a citivlen of the 'United'Stat'es, residing Referring to the drawing by numerals, 1 at Smithville, in the county of St. Louis and denotes a shaping roller-mill, 2 is an inter- 5 State o'fMinnesota, haveinventedcertain new mediate roller-mill, and 3 a table connecting and usefullmprovementsin Rollcr-li 'lills; and the mills and formed, as is usual, of parallel I do hereby declare the following to be a full, frames and rollers, the latter being rotated clear, and'exact description of the invention, from a source of power. (Not shown.) It

such as will enable others skilled in the art will be understood that the table extends in ID to which it appertains to make and use the front of the shaping-mill to convey the ingot same. or slab thereto, and also beyond the inter This invention relates to improvements in mediate mill to the finishingmill. (Not apparatus for rolling metal I-beams,'channelshown.) Extendinglaterally across thetable beams, and the like, and contemplates imis an endless conveyor 4, consisting of a pair [5 proved means by which the metal acted upon of endless chains or cables 5 5, passed around may be conveyed from one part of the appasprocket wheels or sheaves 6 6 and 6' 6', the ratus to another in a manner to effect a very latter being driven from a suitable source of large saving of time in operation with a 0011- power. sequent diminution of expense and to greatly 7 7 denote carriers, each supported to move 20 increase the capacity. 7 on parallel tracks Sand connected to one of i In apparatus of the kind to which my imthe chains or cables 5. provements relate and in the methods at 9 designates asecond or auxiliary table conpresent practiced the metal is conveyed from structed similarly to the table 3 and across the shaping-mill to the intermediate mill and which extends the conveyor 4. The table 9 25 thence to the finishing-mill by means of it leads toasecondintermediate mill 10 and besingle conveyor or table, and inasmuch as yond the latter to a second finishing-mill. the partly-formed beam coming from the (Not shown.) shaping-mill has a length such as precludes The metal after the final pass through the it being readily passed and repassed through shaping-mill is conveyed by the table 3 to a 0 the intermediate and finishing mills it is point opposite the cutter, which may be a customary to divide the metal into two or power-driven circular saw 11, mounted on a more lengths, one of which is conveyed to rocking frame 12, pivoted to a suitable base I the intermediate mill for further reduction, 13. The metal is divided by the cutter, and

y while the other is carried to a reheatingthe forward length, which is positioned to eX- 35 furnace and there kept until the first length tend across the conveyer 4, is engaged when has received its final pass, when it is likewise the conveyer is set in motion by dogs 14: 14 treated. on the carrier 7 and conveyed. to the auxil- Myinvention consists, broadly speaking, of iary table 9. The tables 3 and 9 are then opa table interposed between parts of the aperated and the lengths carried thereby are 4o paratus--for example, the shaping and the simultaneously moved to the respective inintermediate mills-and an auxiliary table termediate mills for further reduction, after connected by a laterally-arranged conveyer which they are conveyed by said tables to the with the first-named table at the point of respective finishing-mills. By the provision location of the metal-dividing means and of the second or auxiliary table and the con- 5 5 leading to a second intermediate mill, the necting-conveyerthedividedlengthsof metal tables operating to convey the two lengths aresimultaneouslyconveyed forfurthertreatof metalto the respective mills for simultament in a sufficiently-heated state, thus obneous treatment. viating the necessity of reheating, which, as

The details of my invention are fully set stated above, obtains in the processes at presit go forth in the following description, and the cut practiced. My improvement, therefore, accompanying drawing illustrates in plan notonlydispenses with thehandlingoflengths for reheating, which effects a large saving of time and a conseqnentdiminution of the running expenses, but by the simultaneous further treatment of both lengths the capacity of the apparatus is very largely increased.

I claim as my invention The combination of a metal-carrying table leading from a shaping-mill to an intermediate milland from thence toa finishing-mill,

10 a second metal-carrying table in parallel relation to the first table and leading to a second intermediate mill and from thence to a second finishing-mill, means for dividing the metal into lengths said means being located WILLIAM ABERCROMBIEI DUNN.

\Vitnesses:

W. T. NORTON, F. L. BROVVNE. 

